Move pub into sdk/lib/_internal.

utils/tests/pub/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:io';
-import 'dart:json' as json;
-
-import 'package:scheduled_test/scheduled_test.dart';
-import 'package:scheduled_test/scheduled_server.dart';
-
-import '../../../pub/io.dart';
-import '../../../pub/utils.dart';
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-main() {
-  initConfig();
-  // Regression test for issue 8849.
-  integration('with a server-rejected refresh token, authenticates again and '
-      'saves credentials.json', () {
-    d.validPackage.create();
-
-    var server = new ScheduledServer();
-    d.credentialsFile(server, 'access token',
-        refreshToken: 'bad refresh token',
-        expiration: new DateTime.now().subtract(new Duration(hours: 1)))
-        .create();
-
-    var pub = startPublish(server);
-    confirmPublish(pub);
-
-    server.handle('POST', '/token', (request) {
-      return new ByteStream(request).toBytes().then((bytes) {
-        var response = request.response;
-        response.statusCode = 400;
-        response.reasonPhrase = 'Bad request';
-        response.headers.contentType = new ContentType("application", "json");
-        response.write(json.stringify({"error": "invalid_request"}));
-        response.close();
-      });
-    });
-
-    authorizePub(pub, server, 'new access token');
-
-    server.handle('GET', '/packages/versions/new.json', (request) {
-      expect(request.headers.value('authorization'),
-          equals('Bearer new access token'));
-
-      request.response.close();
-    });
-
-    pub.kill();
-  });
-}